Tensioning device for loom shuttles



March 10, 1925- 1,529,494

A. MELLOR I TENSIONING DEVICE FOR LOOM SHUTTLES Filed Aug. 7, 1924 V I E V Patented Mar. 10, 1925.

UNITED STATES PATENT-OFFICE.

ARTHUR MELLOB, OF NEW BEDFORD, MASSACHUSETTS, ASSIGNOR OF ONE-HALF TO DENIS FAR-RON LMELLOR, OF NEW BEDFORJJ, MASSACHUSETTS.

TENSIONING DEVICE FOR LOOM SHUTTLES.

Application filed August 7, 1924. Serial No. 730,657.

To all whom it may concern:

Be it known that I, ARTHUR MELLoR, a 'citizen of the United States, residing at New Bedford, in the county of Bristol and State of Massachusetts, have invented certain new and useful Improvements in Tensioning De- I vices for Loom Shuttles, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to tensioning devices for loom shuttles, and particularly to certain improvements in the tensioning device disclosed in my Patent git-1,493,366, granted on May 6, 1924:, this patent showing a tensioning device which consists of opposed members having interior, upwardly opening, vitreous ribs, the ribs of one member fitting into or between the ribs of the other member, and a thread passing between and contacting with these vitreous ribs.

()ne of the objects of the present invention is to improve upon the construction illustrated in my prior patent by the provi- .sion of improved means whereby the two members may be adjusted toward or from each other to adaptthe device to coarser or finer yarns.

A further object is to provide a tensioning device of this character which is simpler to adjust than the tensioning device illustrated in my prior patent and which will lessen the danger of the screws coming loose and damaging the reed, the device being further so constructed that the tensioning members may be made smaller so as to fit any shuttle either for bobbin or cop filing.

Other objectswill appear in the course of the following description.

My invention is illustrated in the accompanying drawings, wherein Figure 1 is a fragmentary top plan View of a shuttle constructed in accordance with my invention;

Figure 2 is a horizontal section on an enlarged scale; v

Figure 3 is a section on the line 3-3'of Figure 2;

Figure 4 is a perspective view of one the tensioning members;

Figure 5 is a perspective view of the other tensioning member.

Referring to these figures, 1O designates a shuttle of ordinary construction and having the usual kerf 11 which extends forwardly and transversely and connects with r the horizontal kerf 12 which in turn communicates with a porcelain eye 13. The bob-- bin of the shuttle is mounted, of course, upon the longitudinally extending shaft 14. This construction is the standard construction and requires no further description.

Disposed within the shuttle and against each side wall thereof are the metal plates or blocks 15 and 16 which are preferably cast. The block 15 at its lower end is formed with an angularly disposed base or flange 17 formed upon its upper face with three sockets 18, and the upper portion of the plate is formed with three outwardly pro- 7 jecting flanges 19, the under faces of which are also formed with sockets. At the junc-' slot 23 extending inward from the inner edge of this base or flange 17 and adjacent one end of the plate or block 15, and passing through the other end of the plate or block 15 is a bolt 24: having ahead 25 engaging against the wall of the shuttle 10 and passing through the adjacent wall of the shuttle and engaged therewith by means of a nut 26 which is, of course, desi ned to be disposed within a countersink 2 in the shuttle wall. The plate 16 is similar to the plate 15 except that it has no base or flange 17 and in place of having three sockets for the reception of three glassrods21 it has sockets for the reception of two glass rods 21, and theseplates 15 and 16 are so disposed that the two glass rods of the plate 16 are disposed opposite to the spaces between the three glass'rods of the p-latei15, as illustrated in Figure 2, so that theyarn' passing from the bobbin is obliged to take a more or less sinuous course in contact alternately with v in a h'oleinthe plate 16.

his

'de'vice will Tlast almost indefinitely.

yarn at no [t me with my device touches 15 in that it is provided adjacent one end with a downwardly extending screw 29 having a head, the shank of the screw being enga geablein'the slot 23 o't'the plate 15. Thus the plate 16 maybe-adjusted toward or from the plate 15 and held locked in its adjusted position by turning up on the screw 29. The plate 16 is also provided in its lower end with outwardly projecting portions 30 within which these sockets for the-lower glass rodsare formed. At the entrance end ofthe plate 16 there'is, provided a guide wire 3,1,"the upper end of which is inserted I This guide wire "extendsfdownw ard and inward and also toward the shuttle cavity. T he thread from thie' s liuttle passes beneath this guide wire and this guide wire acts to prevent the thread from ballooning. It will be seen that 'thi'sffinger or guide wire 31 is curved downward so that the extreme point of the finger is nearly opposite to the middle of the first glass rod21 as "shown 'in Figure 1. hen in placefthisliinger is slightly spaced from the end face of the plate '15 so as to permit the 'insertion'of the yarn or thread. This fiiiger'or-giiide 31 make's it almost impossible foritheyarnto whipor balloon out of the device'as'ithe shuttle is picked across the loom.

It will be seen that my construction provides a very simple and readily adjusted tensioning device and I have "found inactual practice that by allow-ing the yarn to pass through a tensioner having smooth glass elements 'that I seein "a much evener and smoother tension of the yarn than where the {yarn passes "over metallic elements, and

thatthejaction'ofthese glass siirfa'ces is to Stop: all kinks in the .yarn'a'nd secure liner cloth. 'Iton'e "of therods is by any chance broken itcanjhe easily replaced andthus't iie T is any part of the metal and no matter what kind of yarn is used "it will not cut into the metal and cause the yarn to break. The'fguide 31, as before stated, makes it almost impossible for the yarn to whip orbal-loon out of thef'shuttle as the shuttle is picked and,- as before explained, the tensioiiing device i's'adj-ust'a'ble ior coarser or fineryarns.

While, the embodiment or" iiiy invention which I have illustrated has been tCnin'd thoroughly effective in actual practice. I do not wish to be limited thereto "as it is obvious that it might be varied in ina' ny ways without 'departing from 'the spirit of the invention.

This construction provides for the shifting' o'it'thetwo tensi'onor triction me'mbers to ward orftrom each other, which was acco 'n pl'is'hedin my priorpatent by screws p'assinglaterally through the side walls o f the shame: in my gear-parent, metres-t ese liable to cut'th'e reed.

thereinand whereby the two members may be adjusted toward or from each other, this construction also permitting relatively small tension members to be mounted in the shuttle, which the "prior describedconstrue tion did'no't do. 7

I claim 1. In a shuttle having a shuttle cavity, means for ten'sioning yarn comprising oppositely disposed yarn-engaging members, each having a series of vertically disposed, alternately pr'otuberant and depressed portions, the protub'erantportions of one memher being disposed opposite the depressed portions of the other member and the protuberant portions of both members intersecting a common vertical plane extending longitudinally through the shuttle, one of said members bearing against the sidewall of the cavity and against the bottom thereof and having anefiective width'equalto the width of the cavity, means clamping the last named member to the shuttle, and means adjustably engaging the other of said thread-engaging members with the first named member and permitting the adjustment of the second named member toward and from the "first named member.

2. In a shuttle having a cavity, means for tensioning yarn comprising oppositely disposed yarn-engaging members, each having a vertical-series of alternately protuberant and depressed portions, theprotubera-nt portions of one member being disposed oppothe shuttle, one or said members having a laterally extending flange, the base of the member formed said flange having a width equal to the width of the shuttle cavity, the other of said members resting upon the ,uppeififac'e of the'fiange "of the first named member and adjustable toward and from the first named member, and means whereby the second named member may be held in its adjusted position upon and relative to the first named member.

3. In a shuttle having a shuttle cavity, yarn-tensioning means comprising coiii'ront ing members disposed" within said cavity, each member having a series of vertical, alternately protuber ant and depressedfyarnengaging portions, the protuberant portions 01'" one member 'bein'gjdisposed opposite the depressed portions or the oumrmember and said protub ant par ns of them menibers intersecting a common 'plane,'one "of said members having a base fitting the shuttle cavity between the side walls thereof and having a transversely extending passage and a transversely extending slot, a bolt passing transversely through .the shuttle and through said passage and holding the first named member in place, and a headed screw passing through the other member and engaging said slot whereby the last named member may be held in adjusted relation to the first named member.

4. In a shuttle, yarn tensioning means comprising oppositely disposed members, a plurality of vitreous rods mounted upon each member and spaced to each other, the rods of one member being disposed opposite the spaces between the rods of the other member, one of said members having a base flange formed with a transversely extending slot, aboltpassing transversely through this base flange and through the wall of the shuttle and the other member having a downwardly extending headed screw, the shank of which is adapted to be disposed in said slot, whereby said last named member may be adjusted and held in adjusted position with relation to the first named member.

5. In a shuttle having a cavity, yarntensioning means comprising opposing tensioning members, one of said members being formed with a laterally extending base flange fitting said cavity between the side walls thereof, means extending transversely through the shuttle and transversely through said base flange whereby the member may be held and engaged with the wall of the shuttle, the other member resting upon the upper face of said base flange, and a fastening device passing through the base of the second named member and through the slot of the first named member whereby the second named member may be adjusted and held in adjusted posi- Igion with relation to the first named mem 6. As an article of manufacture, yamtensioning means for shuttles comprising opposed. coacting members, said members having on their confronting faces a series of vertically disposed alternate protuberant and depressed portions, the depressed portion of one member coming opposite to a prot-uberant portion of the other member, one of said members having a laterally extending flange adapted to fit within the cavity of a shuttle and having a transverse bore adapted to receive a bolt passing through. the shuttle whereby said member may be held in place within the shuttle cavity, the other member having a double headed screw engaging the transverse slot and being adapted to rest upon said flange and being adjustable on the flange toward or from the first named member, the screw acting to hold the second named member in its adjusted position.

7. As an article of manufacture, yarn tensioning means for shuttles comprising opposed members, said members carrying upon their confronting faces vertically disposed vitreous rods, one of said members having a laterally extending flange having a transversely extending slot, a bolt passing transversely through said flange where by the member may be engaged with the wall of the shuttle, the other member be- ,ing adapted to rest upon saidfla-nge and ARTHUR MELLOR. 

